package com.webserver.controller;

import com.webserver.http.HttpServletRequest;
import com.webserver.http.HttpServletResponse;
import com.webserver.vo.Article;

import java.io.*;
import java.util.ArrayList;
import java.util.List;

public class ArticleController {
    private static File articleDir;
    static {
        articleDir = new File(".articles");
        if (!articleDir.exists()){
            articleDir.mkdirs();
        }
    }
    public void writeArticle(HttpServletRequest request, HttpServletResponse response){
        System.out.println("开始处理发表...");
        String title = request.getParameter("title");
        String author = request.getParameter("author");
        String content = request.getParameter("content");

        if (title==null || author==null || content==null){
            File file = new File("./webapps/myweb/article_fail.html");
            response.setEntity(file);
            return;
        }

        File articleFile = new File(articleDir,title+".obj");

        if (articleFile.exists()){
            File file = new File("./webapps/myweb/article_fail.html");
            response.setEntity(file);
            return;
        }

        Article article = new Article(title,author,content);

        try(
                FileOutputStream fos = new FileOutputStream(articleFile);
                ObjectOutputStream oos = new ObjectOutputStream(fos)
        ) {
            oos.writeObject(article);
            System.out.println("写出完毕！");

            File file = new File("./webapps/myweb/article_success.html");
            response.setEntity(file);
        } catch (IOException e) {
            e.printStackTrace();
        }

        System.out.println("发表处理完成！");
    }
    public void showAllArticle(HttpServletRequest request,HttpServletResponse response){
        System.out.println("开始生成动态页面...");
        List<Article> articlesList = new ArrayList<>();
        File[] subs = articleDir.listFiles(f->f.getName().endsWith(".obj"));
        for (File articleFile : subs) {
            try(
                 FileInputStream fis = new FileInputStream(articleFile);
                 ObjectInputStream ois = new ObjectInputStream(fis);
                 ) {
                Article article = (Article)ois.readObject();
                articlesList.add(article);
            } catch (IOException | ClassNotFoundException e) {
                e.printStackTrace();
            }
        }
        articlesList.forEach(a -> System.out.println(a));
        try {
            PrintWriter pw = new PrintWriter("./articleList.html","UTF-8");
            pw.println("<!DOCTYPE html>");
            pw.println("<html lang=\"en\">");
            pw.println("<head>");
            pw.println("    <meta charset=\"UTF-8\">");
            pw.println("<body>");
            pw.println("<center>");
            pw.println("    <h1>文章列表</h1>");
            pw.println("    <table border=\"1\" bgcolor=\"black\">");
            pw.println("        <tr bgcolor=\"#f0f8ff\">");
            pw.println("            <td align=\"center\">标题</td>");
            pw.println("            <td  align=\"center\">作者</td>");
            for (Article a : articlesList) {
                pw.println("        <tr bgcolor=\"#f0f8ff\">");
                pw.println("            <td>"+a.getTitle()+"</td>");
                pw.println("            <td>"+a.getAuthor()+"</td>");
                pw.println("        </tr>");
            }
            pw.println("    </table>");
            pw.println("</center>");
            pw.println("</body>");
            pw.println("</html>");
            pw.flush();
            System.out.println("写出完毕！");
            File file = new File("./articleList.html");
            response.setEntity(file);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }


        System.out.println("生成动态页面完毕");
    }
}
